<html>

<head>
  <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.6.2/jquery.min.js" type="text/javascript"></script>
  <script src="http://scripts.embed.ly/p/0.2/jquery.preview.full.min.js" type="text/javascript"></script>
  <link rel="stylesheet" href="http://scripts.embed.ly/p/0.2/css/preview.css" />
</head>
<body>
<form action="/update" method="POST">
    <input id="url" type="text" name="url"/>
</form>
<script>
    $('#url').preview({key:'c31f5208f04511e0b79e4040d3dc5c07'})
</script>
</body>
</html>